Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online: Mine Warfare Vessel Photo Archive

ex-HMS J-1011

YMS-211 served served the Navies of Great Britian and Poland.

YMS-1 Class Auxiliary Motor Minesweeper:

  • Laid down 18 May 1942 as YMS-211 by Robert Jacob Inc., City Island, NY
  • Launched, 10 October 1942
  • Completed 7 May 1943 and transferred to Great Britain as HMS J-1011
  • Reclassified HMS BYMS-2211
  • Struck from the Naval Register 28 August 1947
  • Returned to U. S. custody, 29 August 1947 and transferred to the State Department, Foreign Liquidation Commission
  • Transferred to Poland 18 April 1948 and reclassified T-31
  • Later named ORP Delfin
  • Decommissioned 26 June 1957
  • Wrecked 1 August 1957 at 54 38' N., 18 36' E., north of Gdynia, Poland.


  • Displacement 270 t.
  • Length 136'
  • Beam 24' 6"
  • Draft 8'
  • Speed 15 kts.
  • Complement 32
  • Armament: One 3"/50 dual purpose gun mount, two 20mm mounts and two depth charge projectors
  • Propulsion: Two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    YMS-211 94k Delfin
    Photos from Facta Nautica
    Robert Hurst
    YMS-211, 257 & 282 135k The 4th Minesweeper Flotilla Squadron consisting of Delfin; Foka, ex-BYMS-2257 and Mors, ex-BYMS-2282
    Photos from Facta Nautica

    There is no DANFS History currently available for BYMS-2211
    Additional Resources and Web Sites of Interest
    Naval Minewarfare Association
    Association of Minemen
    Back To The Main Photo Index Back To the Mine Warfare Ship Photo Index Back to the Auxiliary Motor Minesweeper (YMS) Photo Index

    Comments, Suggestions, E-mail Webmaster

    This page created and maintained by Joseph M. Radigan
    All pages copyright NavSource Naval History